Juniper QFX Series Hardware Guide

QFX5110 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
QFX5110 Cooling System and Airflow Description . . . . . . . . . . . . . . . . . . . . . 39
Fan Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Do Not Install Components with Different Airflow or Wattage in the
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
QFX5110 Fan Module LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
QFX5110 Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
QFX5110 AC Power Supply Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
QFX5110 AC Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
QFX5110 AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
QFX5110 AC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
QFX5110 DC Power Supply Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
QFX5110 DC Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
QFX5110 DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 55
QFX5110 Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
QFX5110 Site Guidelines and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
QFX5110 Environmental Requirements and Specifications . . . . . . . . . . . . . . 56
General Site Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
QFX5120 Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
QFX5110 Chassis Grounding Cable and Lug Specifications . . . . . . . . . . . . . . 59
QFX5110 Clearance Requirements for Airflow and Hardware
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
QFX5110 Chassis Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
QFX5110 Rack Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
QFX5110 Deployment in a Virtual Chassis or Virtual Chassis Fabric . . . . . . . . . . . 62
Planning a Virtual Chassis Deployment using QFX Devices . . . . . . . . . . . . . . 62
Valid Configurations for a QFX Virtual Chassis . . . . . . . . . . . . . . . . . . . . . 63
Valid Configurations for a QFX5110 Virtual Chassis . . . . . . . . . . . . . . . . . 64
Valid Configurations for a QFX5200 Virtual Chassis . . . . . . . . . . . . . . . . 64
VC Deployment Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Virtual Chassis Fabric Hardware Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Planning a Virtual Chassis Fabric Deployment . . . . . . . . . . . . . . . . . . . . . . . . 67
QFX5110 Network Cable and Transceiver Planning . . . . . . . . . . . . . . . . . . . . . . . . 69
Determining Transceiver Support for the QFX5110 . . . . . . . . . . . . . . . . . . . . . 69
Cable Specifications for QSFP+ and QSFP28 Transceivers . . . . . . . . . . . . . . 70
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and
Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables . . . . . . . 72
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . 72
Calculating Power Budget and Power Margin for Fiber-Optic Cables . . . . . . . 73
Calculating Power Budget for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . 73
Calculating Power Margin for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . 74
QFX5110 Management Cable Specifications and Pinouts . . . . . . . . . . . . . . . . . . . 75
Cable Specifications for Console and Management Connections for the
QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . . . . . 76
Console Port Connector Pinouts for the QFX Series . . . . . . . . . . . . . . . . . . . . 76
Copyright © 2019, Juniper Networks, Inc.iv
QFX5110 Switch Hardware Guide

Juniper QFX Series Specifications

General

Brand	Juniper
Model	QFX Series
Category	Switch
Language	English